<template>
    <div>
        <!--面包屑导航-->
       <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!--卡片视图区域-->
        <el-card >
            <!--搜索与添加区域-->
            <el-row :gutter="20">
            <el-col :span="8">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                    <el-button slot="append" icon="el-icon-search" @click="getUserList" ></el-button>
                </el-input>
            </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>    
            </el-row>
            <!--用户列表区域-->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column prop="username" label="姓名"></el-table-column>
                <el-table-column prop="email" label="邮箱" ></el-table-column>
                <el-table-column prop="mobile" label="电话"></el-table-column>
                <el-table-column prop="role_name" label="角色"></el-table-column>
                <el-table-column prop="mg_state" label="状态" >
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)" ></el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!--修改按钮-->
                        <el-button type="primary" icon="el-icon-edit" size='mini' @click="showEditDialog(scope.row.id)"></el-button>
                        <!--删除按钮-->
                        <el-button type="danger" icon="el-icon-delete" size='mini' @click="removeUserById(scope.row.id)"></el-button>
                        <!--分配角色按钮-->
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable=false>
                            <el-button type="warning" icon="el-icon-setting" size='mini' @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                     
                    
                </el-table-column>
            </el-table>

            <!--分页区域-->
            <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
             :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize"
              layout="total, sizes, prev, pager, next, jumper" :total="total">
            </el-pagination>
        </el-card>

        <!--添加用户的对话框-->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed" >
            <!--内容主体区域-->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password" type='password'>
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!--底部区域-->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>
        
        <!--修改用户的对话框-->
        <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close='editDialogClose'>
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px" >
                <el-form-item label="用户名" >
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop='email'>
                    <el-input v-model="editForm.email" ></el-input>
                </el-form-item>
                <el-form-item label="手机" prop='mobile'>
                    <el-input v-model="editForm.mobile" ></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>
        <!--分配角色的对话框-->
        <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
            <div>
                <p>当前的用户：{{userInfo.username}}</p>
                <p>当前的角色：{{userInfo.role_name}}</p>
                <p>分配新角色：
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>  
    </div>
</template>

<script>
export default {
    data(){
        //验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
           //验证邮箱的正则表达式
           const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
        
           if(regEmail.test(value)){
               //合法的邮箱
               return cb()
           }
           cb(new Error("请输入合法的邮箱"))
        }
        //验证手机号的规则
        var checkMobile = (rule, value, cb) => {
            const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
            if (regMobile.test(value)){
                return cb()
            } 
            cb(new Error("请输入合法的手机号"))
        }
        return {
            queryInfo:{
                query:'',
                pagenum: 1,
                pagesize: 2
            },
            userlist:[],
            total:0,
            //控制添加用户对话框的显示与隐藏
            addDialogVisible: false,
            //控制修改用户对话框的显示与隐藏
            editDialogVisible: false,
            //添加用户的表单数据
            addForm: {
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            //修改用户表单数据
            editForm: {
                
            },
            //添加用户表单的验证规则对象
            addFormRules: {
                username:[
                    {required: true, message:"请输入用户名", trigger: 'blur'},
                    {min :3 , max: 10, message:'用户名的长度在3-10个字符之间', trigger:'blur'}
                ],
                password:[
                    {required: true, message:"请输入密码", trigger: 'blur'},
                    {min :6 , max: 15, message:'密码的长度在6-15个字符之间', trigger:'blur'}
                ],
                email:[
                    {required: true, message:"请输入邮箱", trigger: 'blur'},
                    {min :6 , max: 15, message:'邮箱的长度在6-15个字符之间', trigger:'blur'},
                    {validator: checkEmail, trigger:'blur'}
                ],
                mobile:[
                     {required: true, message:"请输入手机", trigger: 'blur'},
                    {min :6 , max: 15, message:'手机的长度在6-15个字符之间', trigger:'blur'},
                    {validator: checkMobile, trigger:'blur'}
                ]
            },
            //修改用户表单的验证规则对象
           editFormRules: {
                email:[
                    {required: true, message:"请输入邮箱", trigger: 'blur'},
                    {min :6 , max: 15, message:'邮箱的长度在6-15个字符之间', trigger:'blur'},
                    {validator: checkEmail, trigger:'blur'}
                ],
                mobile:[
                     {required: true, message:"请输入手机", trigger: 'blur'},
                    {min :6 , max: 15, message:'手机的长度在6-15个字符之间', trigger:'blur'},
                    {validator: checkMobile, trigger:'blur'}
                ]
           },
           //控制分配角色的对话框显示
           setRoleDialogVisible: false,
           //需要被分配角色的用户信息
           userInfo:[],
           //所有角色的数据列表
           rolesList:[],
           //已选中的角色id
           selectedRoleId:''

        }
    },
    created() {
        this.getUserList()
    },
    methods:{
        async getUserList(){
           const {data: res}=await this.$http.get('users',{params: this.queryInfo})
           if(res.meta.status !== 200){
               return this.$message.error("获取用户列表失败！");
           } 
           this.userlist = res.data.users
           this.total = res.data.total
        },
        //监听 pagesize 改变的事件
        handleSizeChange(newSize) {
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        //监听 页码值 改变的事件
        handleCurrentChange(newPage) {
            this.queryInfo.pagenum = newPage
        },
        //监听开关状态的改变
        async userStateChange(userinfo){
            //console.log(userinfo)
            const {data: res}= await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if(res.meta.status !== 200){
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户失败！！')
            }
            this.$message.success('更新用户状态成功')
        },
        //监听添加用户对话框的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮，添加新用户
        addUser(){
            this.$refs.addFormRef.validate(async valid => {
                if(!valid) return
                //可以发起网络请求
                const {data:res} = await this.$http.post('users',this.addForm)

                if(res.meta.status !== 201){
                 this.$message.error('添加用户失败！')
                }
                this.$message.error('添加用户成功')
                //隐藏添加用户的对话框
                this.addDialogVisible = false
                // 重新获取用户列表数据
                this.getUserList()
            }) 
        },
        //展示编辑用户的对话框
        async showEditDialog(id) {
            //console.log(id)
            const {data:res} = await this.$http.get('users/'+id)
            
            if(res.meta.status !== 200) {
                return this.$message.error('查询用户信息失败！')
            }
            this.editForm = res.data
            this.editDialogVisible = true    
        },
        //监听修改用户对话框的关闭事件
        editDialogClose(){
            this.$refs.editFormRef.resetFields()
        },
        //修改用户信息并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async valid => {
                if(!valid) return
                //发起网络请求修改数据
                const {data:res}= await this.$http.put(
                    'users/'+this.editForm.id,
                     {
                    email:this.editForm.email,
                    mobile:this.editForm.mobile
                })
                if (res.meta.status !== 200){
                    return this.$message.error('更新用户信息失败！')
                }
                //关闭对话框
                this.editDialogVisible = false;
                //刷新数据列表
                this.getUserList()
                //提示修改成功
                this.$message.success('更新用户信息成功！')
            })
        },
        async removeUserById(id){
            //弹框询问用户是否直接删除数据
            const confireResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
        }).catch(err => err)
        //如果用户确认删除，返回字符confirm
        //如果用户取消，返回字符cancel
        //console.log(confireResult)
        if(confireResult !== 'confirm'){
            return this.$message.info('已经取消删除')
        }
        const {data:res}= await this.$http.delete('users/'+id)
        if(res.meta.status !==200){
            return this.$message.error('删除用户失败')
        }
        this.$message.success('删除用户成功')
        this.getUserList()
        },

        async setRole(userInfo){
            this.userInfo = userInfo
            
            //在展示对话框之前，获取所有角色的列表
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status !== 200){
                return this.$message.error('获取角色列表失败')
            }
            //console.log(res)
            this.rolesList = res.data
            this.setRoleDialogVisible = true
        },

        async saveRoleInfo(){
            if(!this.selectedRoleId){
                return this.$message.error('请选择要分配的角色')
            }
            const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,
            {
                rid: this.selectedRoleId
            })

            if(res.meta.status !==200){
                return this.$message.error('更新角色失败!')
            }
            this.$message.success('更新角色成功!')
            this.getUserList()
            this.setRoleDialogVisible = false
        },
        //监听分配角色对话框的关闭事件
        setRoleDialogClosed(){
            this.selectedRoleId = ''
            this.userInfo={}
        }
    }
}
</script>

<style lang='less' scoped>

</style>